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Primary Thoracic Chondrosarcoma with Intra‑Abdominal Extension in a Renal Transplant Recipient: a Case Report

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Primary Thoracic Chondrosarcoma with Intra‑Abdominal Extension in a Renal Transplant Recipient: a Case Report MOLECULAR AND CLINICAL ONCOLOGY 13: 63-66, 2020 Primary thoracic chondrosarcoma with intra‑abdominal extension in a renal transplant recipient: A case report DIMITRIOS GIANNIS1, DIMITRIOS MORIS2,3, BRIAN ISHUM SHAW2 and SPYRIDON VERNADAKIS3 1Faculty of Medicine, School of Health Sciences, University of Thessaly, 41110 Larissa, Greece; 2Duke Surgery, Duke University Medical Center, Durham, NC 27710, USA; 3Transplantation Unit, Laiko General Hospital, 11527 Athens, Greece Received September 11, 2019; Accepted February 18, 2020 DOI: 10.3892/mco.2020.2034 Abstract. Primary thoracic bone tumors are relatively rare. such as enchondromas, and are usually located in bones that The most common type is chondrosarcoma, accounting for up undergo endochondral ossification (1,7,8). Early recognition, to 48% of all cases. Patients with primary thoracic bone tumors preoperative evaluation and adequate surgical intervention commonly present with atypical thoracic pain or a solitary with wide margins are crucial to prevent invasive local disease palpable chest mass, which gradually develops over months and metastasis (3,4,8). Awareness of the characteristics and to years. The bones most often affected are the ribs, scapula, behavior of these tumors are necessary in order to avoid costochondral junctions and the sternum. The present study misdiagnosis and inadequate or unnecessary therapeutic presents a case of a 79 year old previous transplant recipient interventions (4). with a large intra-abdominally expanding chondrosarcoma De novo malignancies have become one of the leading originating from the left lower thoracic cage and associated causes of late mortality after renal transplantation, with their vague abdomdinal symptoms. Early recognition and aware- incidence being 2-15-fold higher than in general population (9). ness of atypical presentations of this disease are important in We report a case of large thoracic chondrosarcoma in a kidney to appropriately guide diagnostic evaluation and therapeutic transplant recipient with intra-abdominal invasion combined procedures. with vague gastrointestinal-related symptoms. Introduction Case report Primary tumors of the chest wall, arising from soft tissue, A 79-year-old woman was referred to our clinic with 3 month bone or cartilage are uncommon. At most, the reported history of mild epigastric pain and intermittent nausea, incidence is only 500 new cases per year in the United without vomiting episodes. The patient underwent kidney States (1). Primary bone tumors of the thoracic cage are rela- transplantation from deceased donor for end stage renal tively rare, representing up to 4-8% of all non-secondary, disease due to diabetic nephropathy 20 years ago, complicated non-metastatic bone neoplasias (2,3). Most chest wall by chronic rejection and return to dialysis the last 5 years. Her bony tumors demonstrate malignant behavior and the most immunosuppression regimen included steroids, cyclosporine, common primary malignancy is chondrosarcoma (1-4). and mycophenolate mofetil. Given the clinical presentation Waller and Newman (2), using data from the Leeds bone and examination findings, a chest and abdomen computerized tumor registry, reported that chondrosarcoma constituted tomography (CT) scan was performed at an outside facility in around 24% of all bone tumors of chest wall, while other order to identify the origin of the palpable mass. Per report, estimates place its incidence at 15-48.1% of the thoracic CT revealed a large space-occupying, non-homogeneous wall malignancies (4-6). solid mass accompanied by intralesional calcifications and Chondrosarcomas may arise as de novo lesions or in the measuring approximately 17x15x12 cm (data not shown). In an context of preexisting benign tumors of cartilage origin, effort to better characterize the mass and delineate its margins, the patient underwent a magnetic resonance imaging (MRI) scan one week later. It demonstrated a mass arising from the 9th left rib with infiltration of the adjacent subcutaneous Correspondence to: Dr Dimitrios Moris, Transplantation Unit, fat tissue. Additionally, the mass exhibited intra-abdominal Laiko General Hospital, Agiou Thoma 17, 11527 Athens, Greece subdiaphragmatic extension with compressive effects on E-mail: [email protected] spleen, greater curvature of the stomach, body and tail of pancreas, left colic flexure, left kidney and renal vein. The Key words: chondrosarcoma, chest wall tumor, rib tumor, sarcoma lesion was well-circumscribed and demonstrated imaging characteristics of neovascularized osteochondral tissue. Preoperative MRI of chest and abdomen did not reveal any suspicious intraparenchymal organ lesion or pathologically 64 GIANNIS et al: PRIMARY THORACIC CHONDROSARCOMA WITH INTRA-ABDOMINAL EXTENSION Figure 2. Postoperative 12 month coronal and transverse plane MRI. (A) Coronal plane MRI revealing no signs of local tumor recurrence. (B) Transverse plane MRI revealing absence of tumor recurrence and no Figure 1. Preoperative coronal and transverse plane MRI. (A) Coronal plane signs of intraparenchymal organ lesions. MRI demonstrating the presence of a well-circumscribed, space-occupying, non-homogeneous solid lower thoracic mass with intra-abdominal extension. (B) Transverse plane MRI presenting the intra-abdominal extension of the mass and the absence of intraparenchymal organ lesions. left sided chest tube and left subdiaphragmatic drain were also placed. Subsequently, the abdominal wall incision was closed in anatomic layers with simultaneous repair of 2 supraumbilical hernias caused by previous laparotomy. The patient, was trans- enlarged intra-abdominal, retroperitoneal or pelvic lymph ferred to the intensive care unit intubated and hemodynamically nodes (Fig. 1). stable for monitoring and further postoperative management. Considering the clinical presentation and imaging The patient was gradually weaned off the ventilator during findings, the decision was made to proceed with surgical the 3rd postoperative day and was subsequently transferred to exploration and resection of the mass with curative intent. the surgical ward. Her diet was advanced gradually and the Exploratory laparotomy was initiated with a left Kocher inci- abdominal drain was removed on post-operative day 8, and the sion extended to the xiphoid process and right subcostal area. chest tube was removed 2 days later. Follow-up radiographic Intraoperatively, a botryoid, grayish lesion of cartilaginous imaging revealed minimal left pleural effusion without any consistency was identified. Its smooth, membranous external signs of pneumothorax. Histopathologic examination reported surface was carefully detached from the surrounding tissues the presence of Grade II chondrosarcoma with malignant with blunt dissection. Despite being in close proximity to the invasion of the 9 and 10th ribs. The patient was discharged mass capsule, the adjacent organs, such as the spleen, greater on the post-operative day 14 and referred to medical oncology curvature of the stomach, pancreas, colon and left renal vein for further evaluation and management. The patient remained were not invaded. A portion of the diaphragm measuring disease-free at the 12 month follow-up, with no evidence of 12x12 cm was invaded and removed via the abdominal inci- disease on MRI (Fig. 2). sion. It corresponded to the left costophrenic recess as well as The present study was approved by the Ethics Committee 9 and 10th lateral rib shaft parts. of Laiko General Hospital (Athens, Greece). Data analysis was The diaphragmatic defect was repaired with mesh. The performed in accordance with the Declaration of Helsinki. visceral antiadhesive surface was placed adjacent to the left Patients who participated in this research had complete clinical lower lung lobe and the parietal surface put in contact with the data. The signed informed consents were obtained from the spleen in order to avoid adhesion to the small bowel serosa. A patients or the guardians. MOLECULAR AND CLINICAL ONCOLOGY 13: 63-66, 2020 65 Discussion tomography (PET) is occasionally used to identify metastatic disease and has also been suggested as a diagnostic modality Soft tissue sarcomas are rare tumors of mesenchymal to differentiate between benign chondral tissue tumors and origin (10). In transplant patients, with the exception of Kaposi chondrosarcoma (1,20). sarcoma-which is relatively common with a 400-500-fold As chondrosarcomas are resistant to radiation and most increased incidence-soft tissue sarcomas are rarely encoun- chemotherapeutic agents, resection considered first line treat- tered, thus the diagnostic and treatment algorithms follow ment (7,14,16). Surgical intervention involves tumor excision those of general population (11-13). with 3-4 cm margins in order to prevent local disease recur- Chondrosarcoma is the most common primary rence (7). However, it is not always feasible to achieve these malignancy of the thoracic cage and is usually located in margins due to proximity to vital neurovascular and visceral bony tissue developing through the endochondral ossification structures (7,16). Local tumor recurrence, metastasis, and process (1,3). These malignant neoplasms may arise as lesions survival are affected by tumor grade, size, diameter, location in previously healthy bone tissues or develop in preexisting and positive margins (7,14,21). Grade I chondrosarcomas benign chondral tissue tumors, such as enchondromas (1). have better prognosis compared to Grade II and III tumors, In addition, chondrosarcomas
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